package com.hxd.common.utils;

import java.security.SecureRandom;
import java.util.UUID;


/**
 *
 * 封装各种生成唯一性ID算法的工具类.
 */
public class IdGen implements java.io.Serializable {

    private static final long serialVersionUID = 1L;

    private static SecureRandom random = new SecureRandom();

    // 封装JDK自带的UUID, 通过Random数字生成, 中间无-分割.
    public static String uuid() {
        return UUID.randomUUID().toString().replaceAll("-", "");
    }

    // 使用SecureRandom随机生成Long.
    public static long randomLong() {
        return Math.abs(random.nextLong());
    }

}
